Move all nodes into core subdirectory

This makes it easier to distinguish core nodes from those added later

nodes/core/social/61-email.html

@@ -0,0 +1,50 @@
+<!--
+  Copyright 2013 IBM Corp.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<script type="text/x-red" data-template-name="email">
+    <div class="form-row">
+        <label for="node-input-name"><i class="icon-envelope"></i> To</label>
+        <input type="text" id="node-input-name" placeholder="email@address.com">
+    </div>
+</script>
+
+<script type="text/x-red" data-help-name="email">
+	<p>Sends the <b>msg.payload</b> as an email, with a subject of <b>msg.topic</b>.</p>
+	<p>It sends the message to the configured recipient <i>only</i>.</p>
+	<p><b>msg.topic</b> is used to set the subject of the email, and <b>msg.payload</b> is the body text.</p>
+	<p>Uses the nodemailer module - you also need to pre-configure your email SMTP settings in ../../emailkeys.js - see INSTALL file for details.</p>
+	<p><pre>module.exports = { service: "Gmail", user: "blahblah@gmail.com", pass: "password", server: "imap.gmail.com", port: "993" }</pre></p>
+</script>
+
+<script type="text/javascript">
+    RED.nodes.registerType('email',{
+        category: 'social-output',
+        color:"#c7e9c0",
+        defaults: {
+            name: {value:"",required:true}
+        },
+        inputs:1,
+        outputs:0,
+        icon: "envelope.png",
+        align: "right",
+        label: function() {
+            return this.name;
+        },
+        labelStyle: function() {
+            return (this.name||!this.topic)?"node_label_italic":"";
+        }
+    });
+</script>